Reciprocating seals are widely used in general industrial machines and are designed to endure rigorous working conditions. Among the harshest challenges, the wide temperature range they withstand has a significant influence on their sealing performance. However, most studies of reciprocating seals have focused only on their sealing characteristics at normal temperatures. To investigate the impacts of temperature on the seal's tribological performance, this paper examines the VL seal, a kind of combined seals, and discusses its performance in a wide temperature range. Material properties of the VL seal at temperatures from −55 °C to 135 °C are measured based on the seal product. The thermo-viscosity effect and the influence of thermal expansion and contraction are both considered in the reciprocating seal modelling. A coupling method that combines the finite-element analysis model with a mixed-lubrication procedure is implemented. For deformation calculation, a comparison between the influence coefficient method and the semi-infinite space method is conducted, and finds only minuscule disparities for the VL-seal analysis. To avoid the divergent problem due to high viscosity at low temperatures, this paper proposes the successive approaching method. Details of the sealing zone in the outstroke and instroke are systematically discussed in relation to a wide range of temperatures. The corresponding experiments are conducted and compared with the simulation. The results indicate that the temperature has a tremendous influence on the tribological performance. The leakage and the friction at the high temperature are much higher than those at the normal temperature.

往复式密封件广泛用于一般工业机械中，并设计用于承受严格的工作条件。在最严峻的挑战中，它们所承受的宽温度范围对其密封性能具有重大影响。然而，大多数对往复式密封件的研究只集中在常温下的密封特性上。为了研究温度对密封件的摩擦性能的影响，本文研究了VL密封件（一种组合式密封件），并讨论了其在较宽温度范围内的性能。基于密封产品测量VL密封在-55°C至135°C温度下的材料性能。在往复式密封模型中都考虑了热粘性效应以及热膨胀和收缩的影响。结合了有限元分析模型和混合润滑程序的耦合方法。对于变形计算，将影响系数法与半无限空间法进行了比较，并且仅发现了极小的视差用于VL密封件分析。为了避免在低温下由于高粘度而导致的发散问题，本文提出了逐次逼近的方法。关于大范围的温度，系统地讨论了中风和中风的密封区域的细节。进行了相应的实验，并与仿真进行了比较。结果表明温度对摩擦学性能有很大的影响。高温下的泄漏和摩擦远高于常温下的泄漏和摩擦。